Li, Dongping
Liu, Jiadun
Funding for this research was provided by:
National Natural Science Foundation of China (Grant No. 51508150)
Department of Education of Hebei Province (Grant No. QN2016115)
Department of Housing and Urban-rural Development of Hebei Province (Grant No. 2018-142)
Article History
Received: 9 October 2018
Accepted: 19 December 2019
First Online: 9 January 2020